This is the crux of the matter. The people who find Vue appealing (myself included) come from the world of design and html+css markup and jQuery. We're not looking to get html into our JavaScript -- rather we're looking to get JavaScript into our html!
There is absolutely no reason to switch from React to Vue if it's working for you (and I don't think anyone in the Vue community would argue with that). But you came from using backbone -- the people who love Vue I think primarily come from using jQuery. We feel the same way about Vue as you do about React, and that's okay! (btw I also use react and also think it's great)
As for staying in React for the rest of your career -- give yourself more credit and hope you'll be around long enough that this isn't true :)